Thomas h



y @met fem item1 @ma THOMAS H. BOWERMAN AND CALVIN J. DART, OF COLD WATER, MICHIGAN.

Leners 2mm No. 81,131, dans August 1s, ieee.

IMPROVEMENT Ihl SASE-FASTENING.

T0 ALL WHOM IT MAY GONOERN:

Y Be it known that we, THOMAS H. B'otrisnMAN. and CALVIN J. DAM', of Cold Water, in the county of Branch, and` State of Miehigamihave invented a new and useful Improvement in Window-Fasteners or Locks; and we do hereby declare" the following to be a full, clear, and exact description of thesame, reference being had to the drawings accompanying this specification, and formingl a part of the samep'and to the figures and letters thereon, in which- Figure 1 represents the 4upper undlouer sash of an ordinary n'iudoiv, and the position of the fasteners onA the casing.

Figure 2^,.a' vien the edge ofthe sash, showing the notches to receive and retain the catch ofthe fastener..

Figure 3, a view ofthe edge ofthe casing with the fasteners in position and Figure 4 the details of construction, with the different parts together ready for use. The object of our invention is cheap and eihcient means for holding windows closed or open. Our invention relates to a newand'improved manner of securing window-sash in their place, so that they may he retained at any desired'height in the casing, ,and at the same time serve as n. lock to prevent them from being raised er lowered by any person outside, thereby affording an effectual security against thieves or hurglas gaining an entrance by means of the window. The fastener-is made of metal, very simple in construction, compact, easily applied by any one to windows of any size or style, whether they slide in their casings vertically or horizontally, and is not liable to hehroken or get out of order by any ordinary use.

In order that others may understand the vconstruction and operation of our window-fastener and lock, We will proceed to particularly describe it. i

A, fig. s, ais a plate, of brass or other metal, in length about equal to the thickness of the sash a, and of proper width, having. holes at each end for the reception of scren's, hy which it is secured to the casing. Between these holes is a slot, a, in which the catch B is free to move. vThis catch B is pivoted at d on the back of the plate A, as shown, and it has an arm, c, extending:r at right angles back from the pivot on which it turns, to enter and he retained in n slot in the end of the'pin e, and at d there'is a. small projection or teat left in iiling, which retainsrthe end of'the spring D in its proper place on the catch. Y This spring D is a coil of wire resting in a suitable cavity in the casing, and hy its pressure the catch B is kept in contact with the edge of the sash at all times. A I I The pin e, which passes through to the outside of the casing, (see iig. 3,) is terminated at its outer end by a head, C, by which it, is pulled out to withdraw the catch B from any of the notches in the edge ofthe sash, when it is desired to raisehor lower the same. p A l Y y .In applying the fastener to the casing, it is necessary to make a suitable cavity to receive the spring D, and the catch B, so that the exposed surface of the plate A will he flush with that part of the casing, and, at the proper distance from the edge of the'casing, a hole for the 4pin e. When this has been done, insert the pin e, then place the arm c in the slot of the pin e, and secure theplate in its place by screws. On the edge ofthe 'sash ne cut no'tchesff, fig. 2, one of which, the upper, isso made as to retain the sash down, while the others allon'it to slide freely up, only retaining it from falling. In order Vto raiseth'e sash, draw out the pin e, which withdraws the catch B',"`ond on starting the sash up, liberate the pin e, when the spring D will press the catch B into any of' the notches of the ysash and retain it in any desired position. To lower the sash, reverse the operation, keeping the pin e drawn out until the sash is down. In applying our fastener to the upper sash, it should be placed near the bottom, as shown in figs. 1 and 3.-

We do not claim broadly o latch'or springg-ea-teh tted .in or in any Way attached to either the'windowsash ory the frame in'whieh the sash slide, for they vare old, and common property but What we do clainras our invention, 'and desire to secure by Letters Patent, is-

The w'indowlfastener as constructed, with the slotted plate A, catch B, spring D, and arm c, as arranged in combination n'ith thesliding pin e andknoh'G, for operatingthe same, substantially in the manner as and for the purposes herein set forth.

Intestimony whereof, we hereunto subscribe our names in the presence of- THOMAS- H. BOWERlViAN,l

" CALVIN J. DART.

Witnesses:

B. C. Wann, ARIAL Pinnen. 

